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प्रश्न
What is a symbol? What information does it convey?
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उत्तर
A symbol is the short form which stands for the atom of a specific element or the abbreviations used for the names of elements.
It represents a specific element.
It represents one atom of an element.
A symbol represents how many atoms are present in its one gram (gm) atom.
It represents the number of times an atom is heavier than one atomic mass unit (amu) taken as a standard.
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संबंधित प्रश्न
Name the element used as a standard for atomic mass scale.
Two elements X and Y have valencies of 5 and 3, and 3 and 2, respectively. The elements X and Y are most likely to be respectively :
Match the symbols of non-metallic elements with their correct combining power or capacity.
(a) O
(b) S
(c) Cl
Combining power or capacity A : 3; B : 2; C : 1. (negative valencies)
State the type of element for the following:
potassium
State the type of element for the following:
Copper
State the type of element for the following:
Aluminium
Write the radical of the following valency:
Oxygen
State the valency of the following metallic element and write symbol with the valency
Chromium
The symbol of tungsten is _______.
The chemical symbol for sodium is
